CN101285557A

CN101285557A - LED lamps with heat radiating device

Info

Publication number: CN101285557A
Application number: CNA2007100275625A
Authority: CN
Inventors: 聂源; 罗心村; 曾哲
Original assignee: SHENZHEN RICHFUL SOLAR ENERGY TECHNOLOGY Co Ltd
Current assignee: SHENZHEN RICHFUL SOLAR ENERGY TECHNOLOGY Co Ltd
Priority date: 2007-04-13
Filing date: 2007-04-13
Publication date: 2008-10-15

Abstract

The invention relates to an LED light fitting with a heat sink. The heat dissipation system of prior LED street lamps is not so perfect that becomes a stumbling block for popularization and application of the LED street lamps. Therefore, the invention provides the LED light fitting with the heat sink, comprising a lampshade, a base plate, an LED lamp group and relative circuits, wherein, the LED lamp group is arranged on the base plate and is arranged inside the lampshade together with the base plate. The invention is characterized in that a radiator block is arranged between the base plate and the lampshade which comprises a radiating panel and a plurality of radiation rib slabs, wherein, the shape of the radiating panel is matched with that of the inside surface of the lampshade and is contacted with the inside surface of the lampshade; the upper edge of each radiation rib slab is contacted with the radiating panel, while the lower edge of each radiation rib slab is contacted with the base plate. The LED light fitting with the heat sink has the advantages of simple structure, convenient manufacture, high luminous efficiency, good heat dissipation effect and long service life, is a perfect updated product of the prior street lamp, and can be widely applied to various exterior illuminations.

Description

The LED light fixture of band heat abstractor

Technical field

The present invention relates to a kind of LED light fixture with heat abstractor.

Background technology

The energy consumption of lighting field accounts for 20% of whole electric energy, and that common illuminating lamp only has 30% electric energy to be used for is luminous, and all the other have changed into heat energy, distribute to the external world.The heat that produces during LED work is less, luminous efficiency is higher, is regarded as cold light source.The LED street lamp is made up of substrate, lens and the cooling system etc. of band LED, compares with traditional incandescent lamp, fluorescent lamp, and its electric energy can reach more than 90%.Since it is born,, more and more be subjected to the attention of countries in the world with its efficient low-consume, energy-conserving and environment-protective, long characteristics of life-span.The electric power that China is used to throw light on present every year is near 2,500 hundred million degree, and wherein if can have 1/3 to adopt the LED street lighting, annual just can the economize on electricity about 80,000,000,000 degree is equivalent to the annual electricity generating capacity in power station, Three Gorges basically.

Though LED is regarded as cold light source, still can produce certain heat during work.The operating temperature of LED is generally less than 50 ℃.Have data to show, when being used as temperature and reaching 55 ℃, its life-span will be reduced half.The heat radiation system of present LED street lamp is imperfection very, has become it and has applied stumbling-block in the process, and centering high-capacity LED street lamp especially is serious.Therefore heat dissipation technology has become one of main direction of studying of person skilled.

Street lamp is in outdoor environment for a long time, requires waterproof and dustproof, protection against insect on the structure, and its lampshade must be the cavity of a sealing.The LED of LED street lamp will work in the environment of sealing equally, and this just means that it can't can only outwards dispel the heat by lampshade by cross-ventilation directly to external world's heat radiation.For this reason, some technical staff is provided with fin at substrate back, and the heat that LED is sent in time is dispersed in the air by fin.Limited but the lampshade inner space is sealed, can't form effective convection current, the heat transfer coefficient of air is low again, and is very slow to external world's heat radiation from radiator so this LED street lamp is only very fast to the heat radiation of fin from LED, can't adapt to the long-term work requirement of street lamp.

Summary of the invention

The technical problem to be solved in the present invention is the above-mentioned defective that how to overcome prior art, and a kind of LED light fixture with heat abstractor is provided.

For solving the problems of the technologies described above, the LED light fixture of band heat abstractor of the present invention comprises lampshade, substrate, LED lamp group and interlock circuit, wherein, LED lamp group is installed on the substrate, and in substrate is installed in lampshade, it is characterized in that: be provided with the radiator group between described substrate and the described lampshade, this radiator group comprises radiation panel and a plurality of heat radiation gusset, wherein radiation panel and lampshade inner surface shape match, and contact with it; The upper limb of each heat radiation gusset contacts with radiation panel, its lower edge and substrate contacts.So design, substrate, heat radiation gusset, radiation panel closely contact with lampshade shell, and the heat that LED produces can in time be diffused in the external environment by heat exchange pattern, and LED is under the suitable operating temperature state all the time.

As optimization, described heat radiation gusset is parallel to each other, and forms heat dissipation channel each other.So design, the lampshade inner air flows comparatively smooth and easy, helps heat radiation.

As optimization, the lower edge of described heat radiation gusset is provided with flange, and the flange of this lower edge closely contacts with substrate.So design, the contact area of heat radiation gusset and substrate is big, good effect of heat exchange!

The upper limb of described heat radiation gusset is provided with flange, and the flange of its upper limb and radiation panel inner surface configuration match, and are combined as a whole with it.So design, the heat exchange better effects if.

As optimization, have a plurality of notches on the radiation panel, above-mentioned notch is divided into a plurality of folding faces with radiation panel, and described folding face only depends on the part to interconnect.So design is convenient to punching press on the one hand, is made, and the inner surface configuration of radiation panel and lampshade is coincide as far as possible; On the other hand, after the installation, the adaptability distortion can take place in radiation panel pressurized, described folding face, eliminates the fine clearance between radiation panel and the lampshade shell, and radiating effect is better.

The LED fitting structure of band heat abstractor of the present invention is simple, easy to process, luminous efficiency is high, good heat dissipation effect, life-span are long, is the desirable regeneration product of existing street lamp, is widely used in various outdoor lightings.

Description of drawings

Fig. 1 is the cross-sectional structure schematic diagram (cutting plane is through vertical axial line) of the LED light fixture embodiment one of this band heat abstractor;

Fig. 2 is the cross-sectional structure schematic diagram (cutting plane is through vertical axial line) of the LED light fixture embodiment two of this band heat abstractor;

Fig. 3 is the elevational schematic view of heat radiation gusset of the LED light fixture embodiment three of this band heat abstractor;

Fig. 4 is that the A of Fig. 3---A is to cross-sectional view;

Fig. 5 is the structural representation of radiation panel of the LED light fixture embodiment four of this band heat abstractor.

Among the figure: 1 is that lampshade, 2 is that substrate, 3 is that radiation panel, 4 is that heat radiation gusset, 5 is that flange, 6 is that notch, 7 is that folding face, 8 is that glass, 9 is LED.

The specific embodiment

Be described further below in conjunction with the LED light fixture of accompanying drawing band heat abstractor of the present invention:

Embodiment one: as shown in Figure 1, the LED light fixture of band heat abstractor of the present invention, comprise lampshade 1, substrate 2, LED lamp group and interlock circuit, wherein, LED lamp group is installed on the substrate 2, and in substrate 2 is installed in lampshade 1, it is characterized in that: be provided with the radiator group between described substrate 2 and the described lampshade 1, this radiator group comprises radiation panel 3 and a plurality of heat radiation gusset 4, and wherein radiation panel 3 matches with the inner surface configuration of lampshade 1, and contact with it.

Described heat radiation gusset 4 is parallel to each other, and forms heat dissipation channel each other.The upper limb of each heat radiation gusset 4 is combined as a whole by welding or mode such as continuous casting and radiation panel 3; Its lower edge is provided with flange 5, and this flange 5 closely contacts with substrate 2 by the screw ways of connecting.

Embodiment two: as shown in Figure 2, shown in substrate 2 be raised type.Remaining part and structure are as described in the enforcement mode one.

Embodiment three: shown in Fig. 3,4, the edge up and down of each heat radiation gusset 4 is provided with flange 5 respectively, and the flange 5 of its upper limb matches with the inner surface configuration of radiation panel 3, and is combined as a whole with it; The flange 5 of its lower edge closely contacts with substrate 2 by the screw ways of connecting.Remaining part and structure are as described in the enforcement mode one.

Embodiment four; As shown in Figure 5, also have a plurality of notches 6 on the described radiation panel 3, above-mentioned notch 6 is divided into a plurality of folding faces 7 with radiation panel, and described folding face 7 only depends on the part to interconnect.Remaining part and structure are as described in the enforcement mode one.

Claims

1, a kind of LED light fixture with heat abstractor, comprise lampshade, substrate, LED lamp group and interlock circuit, wherein, LED lamp group is installed on the substrate, and in substrate is installed in lampshade, it is characterized in that: be provided with the radiator group between described substrate and the described lampshade, this radiator group comprises radiation panel and a plurality of heat radiation gusset, wherein radiation panel and lampshade inner surface shape match, and contact with it; The upper limb of each heat radiation gusset contacts with radiation panel, its lower edge and substrate contacts.

2, the LED light fixture of band heat abstractor according to claim 1 is characterized in that: described heat radiation gusset is parallel to each other, and forms heat dissipation channel each other.

3, the LED light fixture of band heat abstractor according to claim 2, it is characterized in that: the lower edge of described heat radiation gusset is provided with flange, and the flange of this lower edge closely contacts with substrate.

4, the LED light fixture of band heat abstractor according to claim 3, it is characterized in that: the upper limb of described heat radiation gusset is provided with flange, and the flange of its upper limb and radiation panel inner surface configuration match, and are combined as a whole with it.

5, according to the LED light fixture of the arbitrary described band heat abstractor of claim 1～4, it is characterized in that: have a plurality of notches on the radiation panel, above-mentioned notch is divided into a plurality of folding faces with radiation panel, and described folding face only depends on the part to interconnect.